Signed-off-by: Nikolay Borisov <nbori...@suse.com>
---
fs/btrfs/file-item.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 7e2cd9c81eb1..fa5057a4b53a 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -412,6 +412,16 @@ int btrfs_lookup_csums_range(struct btrfs_root *root, u64
start, u64 end,
return ret;
}
+/*
+ * btrfs_csum_one_bio - Calculates checksums of the data contained inside a bio
+ * @inode: Owner of the data inside the bio
+ * @bio: Contains the data to be checksummed
+ * @file_start: offset in file this bio begins to describe
+ * @contig: Boolean. If true/1 means all bio vecs in this bio are
+ * contiguous and they begin at @file_start in the file. False/0
+ * means this bio can contains potentially discontigous bio vecs
+ * so the logical offset of each should be calculated separately.
+ */
blk_status_t btrfs_csum_one_bio(struct inode *inode, struct bio *bio,
u64 file_start, int contig)
{
--
2.17.1
